Three Oil Companies used Date Nails on their Oil Leases. Gulf Oil, Humble Oil and Refinery (Exxon) and Yount Lee Oil Company

Gulf Nails are great fun to hunt.There are 3 varieties of Gulf Oil Nails. The Round Gulf is the most common. Then there is the Round Gulf with the P/L (Pipe Line) hand stamp on it. The rarest one
is the Diamond Gulf. I believe it can be dated to around 1923 due to the number of IC1923 Nails found with them.

This nail is found on old Humble Oil & Refinery oil leases. Humble Oil & Refinery is now known as "Exxon". The H O & R nail is a Hubbard dating to 1934.

This nail is an Aluminum raised Hubbard Nail used by the Yount Lee Oil Company. For more info click here. (C. Sebesta Collection)